Preselecting tool for teletypewriters



17, 1954 H. w. BILLARD ET AL 2,686,829

PRESELECTING TOOL FOR TELETYPEWRITERS Filed June 22, 1951 3 Sheets-Sheet1 FIG. 3

INVENTURS H. M BIL L ARD E. C. BRUNO/16E B) ATTORNEY Aug. 17, 1954 H. w.BILLARD ETAL 2,686,829

PRESELECTING TOOL FOR TELETYPEWRITERS Filed June 22, 1951 3 Sheets-Sheet2 wvavrms HIV. BILL/1R0 Arrok/uis'r Aug. 17, 1954 H. w. BILLARD ET AL2,686,829

PRESELECTING TOOL FOR TELETYPEWRITERS Filed June 22, 1951 3 Sheets-Sheet3 FIG. 6

INVENTORS H. W. B/LLARD E. C. BRUNO/16E Arrdm/EY one wherein the.machine actuate selector Patented Aug. 17, 1954 PRESELECTIN TELETYPEHarold W. Billard, He

Brundage, New Brig mpstead, hton, N

G TOOL FOR WRITERS and Edgar C. Y., assignors to Western ElectricCompany, Incorporated, New

York,

1 Claims.

This invention relates to tools for use in adjusting and repairingsignalling apparatus and more particularly teletypewriters.

There are two general types of teletypewriters, message is printed on atape while in the other it is printed on a page taken from a roll ofsheet material. In each machine there are selecting mechanisms whichwhen func- Y., a corporation Application June 22, 1951,

of New York Serial No. 233,093

levers are employed, although in one type of machine the Televers,normally responding to the marking and spacing pulses, act directly onper- T-levers in the other vanes which operate their respective bellcrank levers to shift the code bars to bring about the desiredfunctions.

In the past to repair or adjust teletypewriters moving the selectormagnet armature, the transfer levers, the cam-operated bell cranklevers, the T-levers, and the code bars including in one machine alsothe selector vanes and their respective bell crank levers operating thecode bars. The accuracy of the movement of these parts distancescomparable to their distances of movement in actual operation and theadjustments required, depends upon the experience and ingenuity of theindividuals.

An object of the invention is to provide a tool which is small in size,readily attachable to teletypewriters and highly efiicient for actuationto. operate the selector mechanisms to perform all the operatingfunctions of the teletypewriter.

With this and other objects in view the invention comprises a tool foruse in adjusting and repairing teletypewriters wherein mechanismsinclude pivotally supported T-levers actuable singly and in variedcombinations to select any of the operating functions of theteletypewriters, the tool including a support removably attachable tothe teletypewriter and provided with selective levers pivotally carriedby the support and arranged so that they will engage their respectiveT-levers and operate them to carry out all of the operating functions ofthe teletypewriter.

Other objects and advantages will be apparent from the followingdetailed description wherein:

Fig. 1 is a top plan view of the tool;

Fig. 2 is a side elevational view of the tool with one of the leversoperated, portions of the tool being shownin section; 1 I I Fig. 3 is asectional view taken along the line mediate washers I04.

The opposing end of the support I00 is provided with a threaded apertureI06 to receive a stud I01 which extends through aligned apertures of thespacers I03 and the auxiliary support I00. The stud I 0'! acts as apivot for five selective levers III, H2, H3, H4, and H5. Through the aidof alock washer H6 and a thumb nut I I! on the outer threaded end of thestud I01, the support I00 and the auxiliary support IOI may be forcedtoward each other tending to clamp the levers and their spacers in closeengagement with each other, creating frictional forces capable ofholding the selective levers in any position but not to interfere withthe manual actuations thereof.

The ends of the levers adjacent the pivot or stud I01 are identical instructure, they being provided with the projections I I8 as illustratedin Fig. 3. The other ends of the levers are similar in contour butvariable in length so that their handles I20 will be disposed instaggered relation with respect to each other as illustrated in Fig. 1.The handles in the present embodiment of the invention bear numerals l,2, 3, 4. and 5 to identify the levers III to H5, inclusive.

The tool is provided with thumb nuts I22 normally held againstdisplacementby a bracket I23 which is fixed to the support I00 andprovided with split apertured ends I24 to receive the reduced ends.Furthermore, the support I00 is apertured in any suitable manner toreceive mounting studs of teletypewriters so that through the aid of thethumb nuts I 22 the tool may be removably secured to the teletypewriter.

Attention is now directed to Sheet 2 of the and 5. These figures areenlarged fragmentary illustrations of one species of teletypewritershown in Fig. '7 of the patent to Morton et al., 1,745,633. The twodigit numbers identifying parts of the teletypewriter are identical withthe reference numerals found in Fig. '7 of the above patent. In theselecting mechanism shown, the bell crank lever IT is cam-operated toact upon the selecting finger i2 which normally controlsthe T-leverS'Landlitsrespective permutation or code bar 38. There are five sets ofselecting mechanisms, leading to five code bars 33, which includeT-levers 31 spaced from each other on alcommon pivot 42 distancessimilar to the spacing 01. the selective levers H l to I I5 inclusive ofthe tool.

The permutation or code bars ifisrmay be shifted from one position toanother controlled .by elongate apertures 4l receiving-a pin -39. Thecode bars are notched along their innersurfaces, 'the notches being soarranged thatithevactuationwof the T-levers 3T, singly and in variedcombinations, will result in aligning given groups-of notches to permitactuation of various mechanisms to bring about certain functions tof:.the machine includingprintingof any of the letters, numbers, orcharacters. The T-levers 3l; are disposed in .a given :order. so thatwhen the toolis mounted onthe machinethrough the securing ;of the'thumbnuts l'22= torconventional-rstuds l of the teletypewriter, it will beknown that the selective levers will be: positioned to 1 actuate anyone: of the known T-levers. For example, when the operator moves theselective lever with a handle :bearingxthe number 1, he WillazknOW thatthe "top T-lever :of the selecting mechanism or" the .teletypewritersystem: for each teletypewriter is known by the repair man an'd,rif notknown, a chart bearing the code may be present beforeihim. .The operatorima'y then;through the aid-of the tool,-.mo"ve the selectingmechanisms throughtheir operating cycles to carry out-every, function ofthe teletypewriterywatching themovement :of the various parts :andmaking the necessary adjustments.

sflhespecies of teletypewriters shown in Fig. 6 iszof. the pageprintingtypeshown in the patent to S;:Morton 'et-al., 1904,15 2. The-tool isillustrated as' being mounted cnzstudsl'l and 18 in Fig. ,28 ofithispatent. The two digit numbers in "Fig. '6 correspond *with the referencenumerals in Fig. 28 of the .last mentioned "Morton et al. patent.In'this structure it will beqapparent thatathe Televers-Zfi are-mountedon .a' common-pivotSl in spaced positions corresponding to the spaningivof'ithe selecting levers l H to i 15 inclusive so that-,when-thetoolis mounted: on the teletypewriter as shown, the ends1|8=ofthe selectivelevers-will engage their respectiveT-levers 29. Inthis species of teletyewriter the -,T-levers are .ldefinite parts of-the selective mechanismsalthough they do not act directly on the vpermutation or icodeibars,their actuations being translated to the code bars'through.selectorwanesand bellxcrank levers as shownin Fig. l of the above patent.

IWith ieither'speciesuof the teletypewriterzthe tool, which .isnormallyapproximately half the size shownin :Fig. l, may be-readilycarried by .the person designated to "repair or-adjust'thetel'etypewriters, the tool being ready. at .all times for mounting on-either species of teletypewriters. Furthermore, the moment the tool .ismounted in place, its selective leversare automaticallypositioned withrespect to the 'T-levers of thexselective mechanisms 01 themachines'tobe adjusted or repaired. By actuating the selective levers"!H to H5, inclusive, singly aridintheirzvariedcombinations, the-operatormay observe the -actions has been operated. :Thecode of all of the partsof the teletypewriter including the selecting mechanisms and theprinting mechanisms and make any adjustments which may be needed. Whentheir adjustments have been completed, the tool may be readily removedfrom the teletypewriter :and transported: to1 another needing repair.

It is to be understood that the above described .arrangements are simplyillustrative of the application .of the principles of the invention. Nu-

merous other arrangements may be readily devised by those skilled in theart which will em- ;bodytthe principles-of the invention and fall withinthe :spiritand scope thereof.

1.-A*'tool'-foruse in adjusting and repairing teletypewnitersmhereinmeans are embodied to operate pivotally supported T-levers to actuatemechanisms singly and in varied combinations to select any of theoperating functions of the teletypewriters, .the stool comprising .:assupport, means :torremova-bly; secure the supportiltoia teletypewriteradjacent the f'Tlevers,can,d selective levers zpivotally carried-by: thesupport: and: positioned to engage and actuate :their. respectiveTelevers independently. :OfHSa-id means? to :operate them wherebysaidmechanisms will be actuated at:.any-.idesired speed to :selectianyof the operating tunctionsofxthe teletypewriter;bycmovement ofitheselecting leverszsinglyzand in variedcombinations to .actuate zthe"T-levers of the said mechanisms.

.12.. A: tool for use in adjusting and repairing teletypewriters whereinmeans i are embodied to operate pivotally supported "T-levers to actuatemechanisms singly and variedcombinationsito select any of the: operatingfunctions :of the-teletypewritersathetool comprising a-.support,- meansto removably secure the :supportzto 1a teletypewriter z-adiacent :theTi-levers, selective levers pivotally carried by .theasupportandtpositioned to engage their respective fT-levers, and handles for theselectivelevers :markedtto identify them and their respective'iT' leverswhereby the, mechanisms may; be. :actuated :at :any: :desired speed: toperform'anyof thetunctionsof the teletypewriter by movement :of theselectivel.-levers bytheraid :of their handles'xsingly and invariedxcombinations to actuatehthe IT-levers ofthesaidemechanismsindependentlywof said meansto .operatezthem.

3. Ai tool 1 for :use in adjusting and repairing teletypewriters whereinz-means are t embodie.d::to operateflpivotally zsupported 'T-.leversi.to .actnate mechanisms singly and :in varied :combi-nationstoselectiany-of the operatingfunctionsofrthe teletypewriters, the toolcomprising a support;;mea-ns to removablysecure the supportrto 1ateletypewriter adjacent the 'fT-elevers, selective levers pivotally,carried :by the support: and ipositionedto engage their respective'ZF-IBV8I'S, :spacersr-interposed betweenthe selective levers to locatethem in like planes with their T leverspand'handlesfor the selective:levers marked? to identify them-and their respective T -levers wherebythe .:mechanisms: may :be actuated-at any desired speed to perform anyof the f-unctionsofthe teletypewriter by movement- :of theselective:leversrby the. aaidzoi their'handles singlygand varied-.combinations toactuate the :T-rlevers of the-said-mechanisms independently 50f said"means to ioperatetthem.

4 A ,tool for use in adjusting (and repairing teletypewriters whereinmeans are" embodied, to operate1pivotally-supported ,T-levers-to actuatemechanisms; singly w and in varied combinations, to select any of theoperatingtunctionsiofntheitelewhereby actuation of the said mechanismswill be operate them, and means applying a, holding force to each of theselecting levers to hold them and the mechanisms including theirT-levers in operated positions.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 10 2,394,765 Hagelin Feb. 12, 1946

